Insecticide, sheep-dip, vermifuge, &amp;c.



I. 8., I. & S. MCDOUGALL. INSECTIGIDE, SHEEP DIP, VERMIPUGE, 6w.APPLICATION FILED SEPT.8,1911.

1,065,156, Patented June 17,1913.

mviann is'rnans rnanna basic.

ISAAC SHIMWELL MoDOUGAIiL-ISAAC MGDOUGA'LL, AND SIDNEY MCDOUGALL, OFMANCHESTER, ENGLAND.

INSECTIOIDE, SHEEP-DIP, WERMI-IEUGE, '&0.

Specification of Letters-Patent.

Patented June 1 7., 1913.

Application filed September 8, 1911. Seria1No.-648,328.

To all whom-1'1 may concern:

Be it known that we, Isaac Surat-WELL MoDoUcALL, ISAAC MCDOUGALL, andSIDNEY.

of a powder, paste or liquid, suitable for ready use as a sheep dip,cattle dressing, or wash for-animals, and as-an insecticide powder orwash for spraying upon plants, trees and other vegetable growth, andupon soil, whereby the parasitic pest is destroyed without any injurywhatsoever to the animal or plant life.

The invention comprises the use of an organic salt or compound ororganic saltsor compounds (hereinafter termed compound) which we haveobtained from the root, bark or other portions of plants, bushes ortrees of the Dalbergia tribe and Dorris family and such as arebotanically called Derris elliptica and are known in Borneo as Tubarabut, Tuba Tedong, and Acre (or Akar) tuba.

The said compound is obtained by extraction or other suitable method. Inthe manufacture of sheep dip such compound is mixed with soap, sulfur orother ingredients and made into a paste, powder or liquid in any knownmanner. Likewise, in the manufacture of an insecticide for use for thedestruction of plant pests, the compound aforesaid may be mixed withsoap, sulfur or other substances which serve as emulsifying or carryingagents.

The aforesaid compound may be used with various other carrying agents,diluents or other substances to form preparations for the destruction ofearth worms, grubs and the like, and also for use as a dose for animalsfor the destruction of internal parasites.

The compound defies analysis but it is identified by the following colorre-action If a small quantity of the compound or the extract or mixturecontaining it, is worked up or mixed with a drop of concentratedsulfuric acid and :a drop of concentrated nitric acid, :a red colorationis observed which is momentarily turned .to brilliant green on theaddition of concentrated ammonia solution.

Referring to the accompanying expla-natory drawing which illustratesdiagrammatically one convenient form of apparatus for obtaining thecompound aforesaid, the bark, root or other portions of the plant,bush-or tree -.to be treated is preferably desiccated :and thendisintegrated or reduced to a fibrous, flocculent'or powdery mass beforebeing placed in the digester or extractor a. While in the said "chamber,the material is acted upon by a suitable solvent, such as benzin, whichremoves the compound from the wood. Said solvent is supplied by thestorage tank or vessel Z) and flows through the .digester a, to theevaporating chamber 0 provided with steam coils cZ-or other heatingmeans, whereby the solvent evaporated and the compound deposited as agummy mass in the lower portion of the evaporator. The evaporatedsolvent passes by way of the pipe e to the condensing chamber f, whereinit is condensed, and is returned to the storage'vessel b for re-use. Theprocess of extraction :is continuous and is completed when tests of thesolvent passing from the vessel a show it to be pure. The compound iswithdrawn from the chamber 0 as a gummy mass and can be at once mixedwith the necessary ingredients for producing the required dip, wash,insecticide or vermifuge, or may be dried and so crystallized beforesuch use. The apparatus is provided with suitable control valves, testcocks, sighting apertures and the like.

During the manufacture of the dip, wash or insecticide we may add to thecomposition, a suitable water softening reagent or reagents which willserve to soften the water with which the dip or the like may be mixedfor use. In like manner we may add a suitable antiseptic or bacteriacideand also a coloring matter The dip, wash, or the like may contain anydesired proportion of the compound according to the class of service towhich it is to be put. Or it may be diluted before use.

For the production of a sheep dip, we may employ a mixture of 5 ozs. ofthe compound obtained as hereinbefore described, with 1 pound of softsoap, such mixture being adapted for use with 100 gallons of Water. Or 5ozs. of the compound may be mixed with 15 ozs. of soft soap, the mixturebeing then absorbed into a powder by means of sulfur to make a totalweight of 10 lbs. This preparation would be used with 100 gallons ofwater. It will of course be understood that the proportions will bevaried according to the nature of the insect or arasite to be destroyed.

ur new or improved material has many important advantages over materialsheretofore employed. For example, in the manufacture of insecticides foruse upon plants, such substances as nicotin, arsenate of lead, and Parisgreen, are usually employed. Sa1d materials are poisonous to man andanimals and are liable to damage plants. But our material is innocuousto man and large animals and cannot cause injury to plants. Likewise inthe manufacture of sheep dip and animal washes, arsenical preparationsand mixtures of carbolic acid are used. Such materials are poisonousboth to man and animals and are liable to cause injury to the skin. Ourmaterial has no irritating effect upon the skin and While very effectivefor destroying insects, is as before stated innocuous to man and largeanimals.

Having now described our invention what we claim as new and desire tosecure by Letters Patent is 1. The herein described composition for useas an ingredient for animal washes, insecticides and vermifuges,comprising a. concentrated extract of trees of the Derris family, saidextract giving a red color when treated with concentrated sulfuric andnitric acids and a fugitive brilliant green color on the furtheraddition of concentrated ammonia solution, as described.

2. The herein described composition for use as an ingredient for animalwashes, insecticide-s and vermifuges, comprising a concentrated extractof Derris elliptica, said extract giving a red color when treated withconcentrated sulfuric and nitric acids and a fugitive brilliant greencolor on the further addition of concentrated ammonia solution, asdescribed.

3. The herein described composition for use as an ingredient for animalwashes, insecticides and vermifuges comprising a concentrated extract oftrees of the Derris family, said extract giving a red color when treatedwith concentrated sulfuric and nitric acids and a fugitive brilliantgreen color on the further addition of concentrated ammonia solution,and carrying agents, as described.

4. The herein described composition for use as an ingredient for animalWashes, insecticides and vermifnges, comprising a concentrated extractof trees of the Derris family, said extract giving a red color whentreated with concentrated sulfuric and nitric acids and a fugitivebrilliant green color on the further addition of concentrated ammonia.solution, and carrying and emulsifying agents, as described.

In testimony whereof we have signed our names to thisspecification inthe presence of two subscribing witnesses.

ISAAC SHIMWELL MCDOUGALL. ISAAC MGDOUGALL. SIDNEY MCDOUGA LL.

Witnesses ARTHUR HUGHES, VVILLIAM CASTLE.

